REESE Elite 19311 2-5/16" Pop-In Ball for Elite Under-Bed Bolt-On Gooseneck Head Lever inside ball head activates ball bearing locking system Lift and turn lever to unlock and remove ball Ball rated for 30,000 lbs. Capacity Fits ford f-250 / f-350 / f-450 with factory installed OE rail system or aftermarket rails (#30126, #30852 & #30868) Pop-In Ball For Elite Under-Bed Gooseneck Hitch Lever inside ball head activated ball bearing locking system Easy lift and turn lever unlocks ball for removal 2-5/16" Ball with chrome finish Limited Lifetime Warranty